As the name suggests, concentric castles were based on a ring-within-a-ring structure. Sometimes known as a multiple castle, the buildings were constructed to present as daunting a challenge to ...

Linear castles were constructed when concentric castles weren't a practical option, and the Normans would build structures designed to direct the enemy's fire. Sometimes a defence's location meant ...

Harlech Castle was begun in 1283, and was finished by 1290 - and was the cheapest of Edward I's castles built at that time. Nevertheless, it was still an astonishing engineering and architectural feat ...

Linear castles were constructed when concentric castles weren't a practical option, and the Normans would build structures designed to direct the enemy's fire. Sometimes a defence's location meant ...